Measuring Higher Level Physical Function in Well-Functioning Older Adults: Expanding Familiar Approaches in the Health ABC Study.

Expands the measurement ceiling of self-report and performance-based measures of function to evaluate development and progression of functional limitation and retain compatibility in older adults. Discussion on self-report and performance-based measures; Criteria for eligibility in the study; Information on self-paced walking test in measuring walking endurance; Process of evaluating the relationship between different types of measures.